Boat-propeller.



J. B. GOURDUN.

BOAT PROPELLEB.

APPLICATION FILED MAR.3|.1911.

1,287,967 Patented Deo. 17, 1918.

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JEAN B. GOURDON, 0F IOTA, LOUISIANA.

BOAT-PROPELLER.

Specification of Letters Patent.

Patented Dec. if?, 1918.

'Application led March 31, 1917. Serial No. 159,023.

To @ZZ 'a0/mm z' may concern:

Be it known that I, JEAN BATISTE Gonn- DoN, a citizen of the United States, residing at Iota, in the parish of Acadia and. State of Louisiana, have invented new and useful Improvements in Boat-Propellers, of which the following is a specification.

This invention relates to new and useful improvements in propellers for vessels and the like, and the principal object of the invention is to provide means for propelling the boat by means of a iin which will engage the water with its broad side on the propelling stroke and which will be returned to propelling position with its narrow side in contact with the water so as to afford but little resistance to the movement of the boat through the water.

A further obj ect of the invention is to provide means whereby the propeller may be easily raised above the water-line for the purposes of repairing the same.

Another object of the invention is to provide a device of this character which is simple and durable in construction, reliable and efficient in operation and one which can be manufactured and placed upon the market at a minimum cost.

The invention also consists in certain other features of construction and in the combination and arrangement of the several parts, to be hereinafter fully described, illustrated in the accompanying drawings and specifically pointed out in the appended claims.

In describing my invention in detail, reference will be had to the accompanying drawings wherein like characters denote like or corresponding parts throughout the several views, and in which z- Figure 1 is a side view of the invention.

Fig. 2 is a front view.

Fig. 3 is a section on line 3-3 of Fig. l,

Referring to these views l indicates a supporting piece adapted to be secured to the side of the ship where it is desired to place the propeller. I find the most suitable position for the propellers to be three or four yards from the stern of the boat with a companion propeller about the same distance forward. The front face of the part l is provided with a groove 1 of substantially wedge shape and into this groove is placed the carrying member 6. This member has its edges of curved formation so as to readiljY engage the edges of the groove. 2 indicates a pair of supporting lugs extending outwardly from the member 6 and having the shaft 3 journaled therein. The lugs also carry pins 3 which project slightly beyond the lugs. The shaft is provided with toothed wheels 5 adjacent each lug. At its upper end said shaft is provided with a beveled gear 8 which is engaged by a like gear 7 on a shaft l0 which is to be driven by any suitable means in the vessel. 4 indicates the propelling member or fin which is provided at each end with a toothed part 4, the teeth of which engage with the gears 5. The outer edges of the part 4' are provided with grooves 4X which engage the pins 3. As shown the part 4 projects on each side of the fin 4 and the teeth on the eXtreme ends of said part project beyond the ends of the tin. In this manner when the shaft 3 is rotated the wheels 5 engaging with the toothed partv 4 will cause the n to move parallel to the vessels side but when the teeth on the end of the tin come in engagement with the toothed wheels said fin will have its outer` end swung in a circle away from the ships side-and thus act as a propelling means for forcing the ship forwardly. As soon as the end makes this semi-circle the straight side comes into engagement with the wheels and the lin is moved forwardly again in its parallel path. When desired I may place a handle l1 on the shaft 8 so that the same may be rotated by hand. The supporting beam 14 for the shaft 10 is removably secured to the member l so that when it is desired to raise the propeller it is simply necessary to remove said beam to permit the part 6 to slide upwardly and this will carry the propeller with it.

It is thought from the foregoing description that the advantages and novel features of my invention will be readily apparent.

I desire it to be understood that I may make such changes in the construction and in the combination and arrangement of the several parts, provided that such changes fall within the scope of the appended claims.

What I claim is l. A propeller comprising a hn having a part secured thereon provided with teeta about its edges, and a longitudinal groove in its outer face, a shaft, a toothed Wheel thereon engaging With the seid teeth, ay pin engaged in said groove, und means for roo tating said shaft.

Gopes of this patent may be obtained for iv Leer/,967

cal member, and a. transverse member secured to the upper and lower edgesthereof and extending beyond the same, and teeth formed on the periphery of said transverse members and engaging With the toothed Wheels, und grooves in said members engaging with Jthe pins.

J. B. GoURnoN. 

